在材料力学教学中,引入工程实例进行案例式教学,不仅提高了学生的学习兴趣,而且培养了学生的力学建模能力、分析能力和解决问题的能力。

针对西南地区特有的急倾斜薄煤层开采所引起的岩层移动进行监测,研究结果表明在急倾斜薄煤层开采中,虽然煤层较薄,采区巷道的矿压显现仍较强烈,在煤巷掘进期间会产生较大变形,回采后变形将会继续加大。

By using technologies of nondestructive detecting as well as conventional detecting such as the sound wave resilience,high-frequency geological radar,tunnel contourgraph,and drill coring,all kinds of diseases of a certain tunnel were investigated and inspected.Reasons for these diseases were analyzed from tunnel design,construction,materials,utilization and maintenance,the health state of the tunnel was diagnosed,and some countermeasures for treating these diseases proposed,which will be beneficial to the diagnosis,prevention,and treatment of highway tunnel diseases.

C2C类电子商务的市场前景是很乐观的,本文就此类电子商务的市场环境、经营模式、产品特点,以及发展优势进行了论述,并对其存在的问题进行了总结和分析,认为其发展优势无庸质疑,但要取代传统的零售商务还有待时日。

This text analyses and researches and shows the volume of passenger transport of each public transportation route is generally for the common linear association which hands over conduct OD quantity, then introduce a function of assigning (coefficient), la it arrive relevant traffic current situation form, OD of public transit, of district that pass it is revise to accumulate to go on to assign directly in rational proportion (weight) each volume of the flow of passengers of pubh'c transportation route, get the current situation flow of passengers OD distribution between the traffic districts finally.

本文论述了在建筑设计中环境艺术的重要性,从五个不同的方面说明了人与环境之间的相互依赖的关系,提醒人们重视自然环境和人文环境的发展规律,创造共生的环境艺术.

由于岩石抗拉能力低,在很多情况下,岩体工程的破坏是从岩石局部受拉破坏开始.采用直接拉伸法和劈裂法,在INSTRON-1345液压伺服刚性材料试验机和CSS-44000 电子万能试验机上,分别对花岗岩、砂岩和泥岩进行了抗拉强度试验.试验证实了直接拉伸法较劈裂法优越,直接拉伸试验试件中受拉裂缝的扩展是试件产生非弹性应变最直接的原因.